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Marquise|Lab Grown|IGI

1.50ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG761509822

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG761509822

Diamond specifications and retailer prices

From £326 GBP
As of November 6, 2026
Save £555 GBP (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £881 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.5ct lab-grown marquise diamond

This 1.5ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG761509822 or 761509822. Listed at 7 retailers as of November 2, 2026, with prices from £326 to £881, a £555 spread on the same certified stone. MOH London lists it at £881. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761509822
Dimensions11.54 × 5.99 × 3.66 mm
L/W Ratio1.93
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.54 mm5.99 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761509822
Side View
Table 62.0%Crown 32.7°Girdle: STK-THKPavilion 40.3°Culet: NoneDepth 61.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £881 GBP|Low: £313 GBP|High: £882 GBP|Avg: £519 GBP|+14.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6£326 GBP
Retailer 3£335 GBP
Retailer 2£343 GBP
Retailer 4£434 GBP
Retailer 5£646 GBP
Retailer 7£654 GBP
MOH London£881 GBP

43 data points across 7 retailers

7 retailers£326 GBP to £881 GBP

B+
Cheapest Retailer
-
£326 GBP
A
Retailer 2
-
£335 GBP
View
A
Retailer 3
-
£343 GBP
View
B+
Retailer 4
-
£434 GBP
View
B
Retailer 5
-
£646 GBP
View
B
Retailer 6
-
£654 GBP
View
Most Expensive
B
MOH London
LG761509822 · Nov 2
£881 GBP
View
6 more retailers have this diamond
Prices start from £326 GBPSave up to £555 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.50ct Marquise
£326 GBP